| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must [be] [vb pp] [conj] | 754 |
|
| 2 | [pron] must [adv] [be] [vb pp] | 419 |
|
| 3 | must [adv] [be] [vb pp] [conj] | 225 |
|
| 4 | [pron] [adv] [be] [vb pp] [conj] | 60 |
|
